MCQOPTIONS
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MCQOPTIONS
This section includes 58 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A series circuit has a 24 V source and a total resistance of 120 . The current through each resistor is |
| A. | 24 mA |
| B. | 200 mA |
| C. | 120 mA |
| D. | 20 mA |
| Answer» C. 120 mA | |
| 2. |
A 12 V battery is connected across a series combination of 68 , 47 , 220 , and 33 . The amount of current is |
| A. | 326 mA |
| B. | 16.3 mA |
| C. | 32.6 mA |
| D. | 163 mA |
| Answer» D. 163 mA | |
| 3. |
The total resistance of eight 5.6 k resistors in series is |
| A. | 8 |
| B. | 5,600 |
| C. | 4,480 |
| D. | 44,800 |
| Answer» E. | |
| 4. |
Two 1.5 V cells are connected series opposing across two 100 resistors in series. Total current flow is |
| A. | 15 mA |
| B. | 5 mA |
| C. | 2 mA |
| D. | 0 A |
| Answer» E. | |
| 5. |
The total resistance of a circuit is 680 . The percentage of the total voltage appearing across a 47 resistor that makes up part of the total series resistance is |
| A. | 68% |
| B. | 47% |
| C. | 69% |
| D. | 6.91% |
| Answer» E. | |
| 6. |
Two 6 V batteries are connected series aiding across two 1.2 k resistors in series. Current through each resistor is |
| A. | 5 mA |
| B. | 10 mA |
| C. | 0 A |
| D. | 2.5 mA |
| Answer» B. 10 mA | |
| 7. |
A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except . The voltage across is |
| A. | 0 V |
| B. | 1.2 V |
| C. | 6 V |
| D. | 0.6 V |
| Answer» D. 0.6 V | |
| 8. |
A series circuit consists of three resistors with values of 120 , 270 , and 330 . The total resistance is |
| A. | less than 120 |
| B. | the average of the values |
| C. | 720 |
| D. | 120 |
| Answer» D. 120 | |
| 9. |
A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 . If each resistor is operating in the circuit at its maximum power dissipation, total current flow is |
| A. | 27 mA |
| B. | 2.7 mA |
| C. | 19 mA |
| D. | 190 mA |
| Answer» B. 2.7 mA | |
| 10. |
A series circuit consists of three resistors. Two resistors are 1.2 k each. The total resistance is 12 k. The value of the third resistor |
| A. | is 9,600 |
| B. | is 960 |
| C. | is 1.2 k |
| D. | cannot be determined |
| Answer» B. is 960 | |
| 11. |
Three 680 resistors are connected in series with a 470 V source. Current in the circuit is |
| A. | 69 mA |
| B. | 230 mA |
| C. | 23 mA |
| D. | 690 mA |
| Answer» C. 23 mA | |
| 12. |
The term means that sources are in series with opposite polarities. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
A series circuit consists of a 4.7 k, a 12 k, and a 2.2 k resistor. The resistor that has the most voltage drop is |
| A. | the 12 k |
| B. | the 2.2 k |
| C. | the 4.7 k |
| D. | impossible to determine from the given information |
| Answer» B. the 2.2 k | |
| 14. |
Two resistors are in series: a 5.6 k resistor and a 4.7 k resistor. The voltage drop across the 5.6 k resistor is 10 V. The voltage across the 4.7 k resistor is |
| A. | 8.39 V |
| B. | 10 V |
| C. | 2.32 V |
| D. | 0 V |
| Answer» B. 10 V | |
| 15. |
is a term sometimes used to describe voltage sources of the same polarity in series. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
The following resistors (one each) are connected in a series circuit: 470 , 680 , 1 k, and 1.2 k. The voltage source is 20 V. Current through the 680 resistor is approximately |
| A. | 60 mA |
| B. | 30 mA |
| C. | 6 mA |
| D. | 300 mA |
| Answer» D. 300 mA | |
| 17. |
The voltage at one point in a circuit is always measured relative to another point. |
| A. | rue |
| B. | alse |
| Answer» B. alse | |
| 18. |
A series circuit has a 24 V source and a total resistance of 120 Ω. The current through each resistor is |
| A. | 4 mA |
| B. | 00 mA |
| C. | 20 mA |
| D. | 0 mA |
| Answer» C. 20 mA | |
| 19. |
Two 6 V batteries are connected series aiding across two 1.2 kΩ resistors in series. Current through each resistor is |
| A. | mA |
| B. | 0 mA |
| C. | A |
| D. | .5 mA |
| Answer» B. 0 mA | |
| 20. |
The following resistors (one each) are connected in a series circuit: 470 Ω, 680 Ω, 1 kΩ, and 1.2 kΩ. The voltage source is 20 V. Current through the 680 Ω resistor is approximately |
| A. | 0 mA |
| B. | 0 mA |
| C. | mA |
| D. | 00 mA |
| Answer» D. 00 mA | |
| 21. |
The total resistance of eight 5.6 kΩ resistors in series is |
| A. | Ω |
| B. | ,600 Ω |
| C. | ,480 Ω |
| D. | 4,800 Ω |
| Answer» E. | |
| 22. |
The total resistance of a circuit is 680 Ω. The percentage of the total voltage appearing across a 47 Ω resistor that makes up part of the total series resistance is |
| A. | 8 % |
| B. | 7 % |
| C. | 9 % |
| D. | .91 % |
| Answer» E. | |
| 23. |
A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200 Ω. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is |
| A. | 7 mA |
| B. | .7 mA |
| C. | 9 mA |
| D. | 90 mA |
| Answer» B. .7 mA | |
| 24. |
The term 'series opposing' means that sources are in series with opposite polarities. |
| A. | rue |
| B. | alse |
| Answer» B. alse | |
| 25. |
Three 680 Ω resistors are connected in series with a 470 V source. Current in the circuit is |
| A. | 9 mA |
| B. | 30 mA |
| C. | 3 mA |
| D. | 90 mA |
| Answer» C. 3 mA | |
| 26. |
The sum of all the voltage drops around a single closed loop in a circuit is zero. |
| A. | rue |
| B. | alse |
| Answer» B. alse | |
| 27. |
A series circuit acts as a voltage divider. |
| A. | rue |
| B. | alse |
| Answer» B. alse | |
| 28. |
A series circuit acts as a current divider. |
| A. | rue |
| B. | alse |
| Answer» C. | |
| 29. |
Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is |
| A. | 5 mA |
| B. | mA |
| C. | mA |
| D. | A |
| Answer» E. | |
| 30. |
A series circuit consists of a 4.7 kΩ, a 12 kΩ, and a 2.2 kΩ resistor. The resistor that has the most voltage drop is |
| A. | he 12 kΩ |
| B. | he 2.2 kΩ |
| C. | he 4.7 kΩ |
| D. | mpossible to determine from the given information |
| Answer» B. he 2.2 kΩ | |
| 31. |
A short in a series circuit prevents current. |
| A. | rue |
| B. | alse |
| Answer» C. | |
| 32. |
A series circuit consists of three resistors. Two resistors are 1.2 kΩ each. The total resistance is 12 kΩ. The value of the third resistor is |
| A. | ,600 Ω |
| B. | 60 Ω |
| C. | .2 kΩ |
| D. | annot be determined |
| Answer» B. 60 Ω | |
| 33. |
There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage is |
| A. | V |
| B. | epends on the current flow |
| C. | epends on the resistor values |
| D. | 0 V |
| Answer» E. | |
| 34. |
The total resistance of a series circuit is equal to the difference between the largest and smallest value resistors. |
| A. | rue |
| B. | alse |
| Answer» C. | |
| 35. |
Two resistors are in series: a 5.6 kΩ resistor and a 4.7 kΩ resistor. The voltage drop across the 5.6 kΩ resistor is 10 V. The voltage across the 4.7 kΩ resistor is |
| A. | .39 V |
| B. | 0 V |
| C. | .32 V |
| D. | V |
| Answer» B. 0 V | |
| 36. |
A 12 V battery is connected across a series combination of 68 Ω, 47 Ω, 220 Ω, and 33 Ω. The amount of current is |
| A. | 26 mA |
| B. | 6.3 mA |
| C. | 2.6 mA |
| D. | 63 mA |
| Answer» D. 63 mA | |
| 37. |
A series circuit consists of three resistors with values of 120 Ω, 270 Ω, and 330 Ω. The total resistance is |
| A. | ess than 120 Ω |
| B. | he average of the values |
| C. | 20 Ω |
| D. | 20 Ω |
| Answer» D. 20 Ω | |
| 38. |
‘Series aiding’ is a term sometimes used to describe voltage sources of the same polarity in series. |
| A. | rue |
| B. | alse |
| Answer» B. alse | |
| 39. |
A series circuit has a 24 V source and a total resistance of 120 . The current through each resistor is |
| A. | 24 mA |
| B. | 200 mA |
| C. | 120 mA |
| D. | 20 mA |
| Answer» C. 120 mA | |
| 40. |
Three 680 resistors are connected in series with a 470 V source. Current in the circuit is |
| A. | 69 mA |
| B. | 230 mA |
| C. | 23 mA |
| D. | 690 mA |
| Answer» C. 23 mA | |
| 41. |
Five resistors are connected in a series and there is a current of 3 A into the first resistor. The amount of current into the second resistor is |
| A. | 0.125 |
| B. | 0.041666666666667 |
| C. | 0.16666666666667 |
| D. | 0.3 A |
| Answer» B. 0.041666666666667 | |
| 42. |
If you know the current anywhere in a series circuit, you know the current everywhere in a series circuit. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 43. |
If a 24 V and a 6 V battery are series opposing, the total voltage is |
| A. | 30 V |
| B. | 24 V |
| C. | 18 V |
| D. | 0 V |
| Answer» D. 0 V | |
| 44. |
All the voltage drops and the source voltage added together in a series circuit is equal to |
| A. | the total of the voltage drops |
| B. | the source voltage |
| C. | zero |
| D. | the total of the source voltage and the voltage drops |
| Answer» D. the total of the source voltage and the voltage drops | |
| 45. |
In a series circuit, the individual powers are additive. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 46. |
The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates |
| A. | 12 W |
| B. | 48 W |
| C. | 3 W |
| D. | 8 W |
| Answer» D. 8 W | |
| 47. |
Four equal-value resistors are in series with a 12 V battery and 13.63 mA are measured. The value of each resistor is |
| A. | 22 |
| B. | 220 |
| C. | 880 |
| D. | 88 |
| Answer» C. 880 | |
| 48. |
A 12 V battery is connected across a series combination of 68 , 47 , 220 , and 33 . The amount of current is |
| A. | 326 mA |
| B. | 16.3 mA |
| C. | 32.6 mA |
| D. | 163 mA |
| Answer» D. 163 mA | |
| 49. |
When one of three series resistors is removed from a circuit and the circuit is reconnected, the current |
| A. | increases |
| B. | increases by one-third |
| C. | decreases by one-third |
| D. | decreases by the amount of current through the removed resistor |
| Answer» B. increases by one-third | |
| 50. |
A series circuit consists of three resistors. Two resistors are 1.2 k each. The total resistance is 12 k. The value of the third resistor |
| A. | is 9,600 |
| B. | is 960 |
| C. | is 1.2 k |
| D. | cannot be determined |
| Answer» B. is 960 | |